isnt that the clan of the carnival?
Viewing post in Kit to Leader: 8 Year Anniversary comments
if you want to join Sunclan you have to tell the leader that Crystal (your sister) has a relationship with sunfall (a Sunclan member) and then after that wait a little bit and sunfall will appear he will ask you to come at the fair (Sunclan) and after talking a bit with the cats there at Sunclan,one of them should allow you to join